Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 2,424	$ 557	$ 13,156	$ 5,931
Other comprehensive income (loss):
Unrealized gain (loss) on available-for-sale securities, net of income tax expense of $5, $0, $5 and $0	14	3	13	(10)
Foreign currency translation, net of income tax expense (benefit) of $(1), $(4), $4 and $1	132	176	(352)	12
Current period other comprehensive income (loss)	146	179	(339)	2
Comprehensive income	$ 2,570	$ 736	$ 12,817	$ 5,933